.inputWidth {
  width: 200px;
  display: inline-block;
}

.spanspan {
  color: red;
  font-size: 20px;
}

.cover {
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, .5);
}

.jumbotron{
  margin: 0 auto;
  width: 600px;
  background-color: #ffffff;
}
.jumbotron h1{
  text-align: center;
  font-size: 35px;
  margin-top: -30px;
}
.jumbotron h2{
  text-align: center;
  font-size: 20px;
  margin-bottom: 40px;
}
.jumbotron input{
  width: 350px;
  height: 35px;

}
.jumbotron button{
  width: 250px;
  height: 35px;
  margin-left: 50px;
  background-color: #adc9ff;
  border: 0;
  color: #ffffff;

}
nav {
  background-color: #ffffff;
  height: 60px;
  margin-bottom: 30px;
  border-bottom: 4px solid rgba(210, 210, 210, 0.322);
}

nav div {
  display: flex;
}

nav div img {
  width: 142px;
  height: 24px;
  margin: 21px 130px 0 0;
}
.col-sm-10{
  position: relative;
  display: flex;
}
.col-sm-10 .spanspan{
  font-size: 14px;
  height: 26px;
  line-height: 26px;
  margin-left: 10px;
  margin-top: 5px;
  width: 170px;
}
.col-sm-10 #sc{
  position: absolute;
  background-color: #adc8ff6c;
  width: 60px;
  text-align: center;
  height: 26px;
  line-height: 26px;
  border-radius: 5px;
  left: 270px;
  top: 5px;

}